Anti histamine drugs

Overview Have you ever walked into your local drug store just to grab an allergy medicine and became instantly overwhelmed with all the choices in front of you? In this guide, we will hopefully simplify your options and give you a better idea of just what medication is the best choice for you. What Is Histamine? ​Histamine plays a central role in the allergic response and it's main purpose is not to simply cause the symptoms we hate so much (although it feels like that sometimes!). It's effects on the blood vessels in our body and in our airways is what usually causes the most grief. Histamine also has a major role in the release of stomach acid and the release of neurotransmitters in the brain. There are numerous histamine receptors, but this article will focus on H1 receptors. All the antihistamine medications that are indicated for allergies are H1 antagonists or simply "antihistamines". When released, histamine causes some of the following effects: • Vasodilation (dilating the blood vessels) - This is what causes a majority of the nasal symptoms you experience, most commonly that congested nose. • Cardiac effects - Something we are not usually as aware of when our allergies hit us, but histamine influences both how hard our heart contracts and how fast it pumps. • Contraction of Smooth Muscle - Smooth muscle is found everywhere in the body including in our airways. This causes the symptoms of wheezing and coughing. • Itching - Histamine release also causes itching and ...

Healthlineonly shows you brands and products that we stand behind. Our team thoroughly researches and evaluates the recommendations we make on our site. To establish that the product manufacturers addressed safety and efficacy standards, we: • Evaluate ingredients and composition:Do they have the potential to cause harm? • Fact-check all health claims:Do they align with the current body of scientific evidence? • Assess the brand:Does it operate with integrity and adhere to industry best practices? We do the research so you can find trusted products for your health and wellness. Common anti-allergy drugs, known as antihistamines, include Benadryl, Zyrtec, Claritin, and others. They work by reducing the impact of histamine in your body, which relieves your allergy symptoms. When you have an allergic reaction, your body releases a substance called histamine. Histamine causes allergy symptoms when it binds to receptors on certain cells in your body. Antihistamines work by decreasing the effects of histamine on certain cell receptors. Over-the-counter (OTC) antihistamines can help treat symptoms such as: • congestion • runny nose • sneezing • itching • nasal swelling • hives • skin rashes • itchy and watery eyes Read on to learn how the different brand-name antihistamines can help treat your First-generation OTC oral antihistamines, including diphenhydramine and chlorpheniramine, are the oldest group. They are sedating, which means they’re likely to make you drowsy after you us...

Hydroxyzine Generic name: hydroxyzine [ hye-DROX-ee-zeen] Brand names: ANX, Drug classes: Medically reviewed by • • • • • • • What is hydroxyzine? Hydroxyzine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of itching, or hives on the skin. Hydroxyzine may be used to treat allergic skin reactions such as hives or contact dermatitis. Since hydroxyzine also reduces activity in the central nervous system, it can be used as a sedative to treat anxiety and tension. It is also used together with other medications given during and after general anesthesia. Hydroxyzine is also used to treat allergic skin reactions such as hives or contact dermatitis. Warnings Hydroxyzine may cause birth defects. Talk to you doctor before using hydroxyzine if pregnant or breastfeeding. Hydroxyzine can cause a serious heart problem, especially if you use certain medicines at the same time. Tell your doctor about all your current medicines and any you start or stop using. This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert. Stop using this medicine and call your doctor at once if you have a serious side effect such as tremors, confusion, seizures, or restless muscle movements in your eyes, tongue, jaw, or neck. Drinking alcohol can increase certain side effects of hydroxyzine. Related/similar drugs Before taking this medicine You should not use hydroxyzine if ...

Description and Brand Names Drug information provided by: US Brand Name • AHIST • Alavert • Allegra • Aller-Chlor • Aller-G-Time • Antivert • Atarax • Benadryl • Brovex • Childrens Benadryl Allergy Fastmelt • Childrens Pedia Care • Clarinex • Complete Allergy • Compoz Nighttime Sleep Aid • Diphen • Dormin Sleep Aid • Dramamine • Dytan • Dytuss • FusePaq Dicopanol • Histex PD • Hydramine • Lodrane • Nolahist • Optimine • Pediatex 12 • Periactin • Polaramine • Q-dryl • Quenalin • Serabrina LA France • Siladryl • Silphen • Simply Allergy • Simply Sleep • Sleep-Ettes D • Sleep Formula • Sleepinal • Sominex • Tavist • Twilite • Unisom • Unisom Sleepgels Maximum Strength • Vistaril • Xyzal • Zymine • ZyrTEC Canadian Brand Name • Allergy Formula • Allergy Formula Liquid • Basic Care Allergy Relief Caplets • Benadryl Allergy Childrens • Benadryl Childrens • Buckleys Jack Jill Bedtime • Clear Allergy Formula For Adults And Children • Diphedryl Clear • Equate Nighttime Sleep Aid Liquid - Berry Flavour • Exact Allergy Formula Caplets • Exact Nighttime Sleep-Aid - Berry • Gravol Descriptions Antihistamines are used to relieve or prevent the symptoms of hay fever and other types of allergy. They work by preventing the effects of a substance called histamine, which is produced by the body. Histamine can cause itching, sneezing, runny nose, and watery eyes. Also, in some persons histamine can close up the bronchial tubes (air passages of the lungs) and make breathing difficult. Some of t...

Antihistamines are a class of drugs that help to treat the symptoms of various allergies. The main difference between first-generation and second-generation What Are Antihistamines Used For? Antihistamines are medications that block chemicals in the body called histamines. Histamines are the chemical that gets released after you are exposed to something you are allergic to. They cause the symptoms of an allergic reaction, like: • Itchiness • Hives • • Itchy eyes • Sneezing • Insomnia • Nausea • Vomiting • Fatigue There are two different types of histamines: H-1 receptor antagonists and H-2 receptor antagonists. Typically, antihistamines that treat H-2 receptor antagonists treat gastrointestinal symptoms. Both first-generation and second-generation antihistamines treat H-1 receptor antagonists. H-1 receptor antagonists treat: • Colds • Food allergies • Hives • Hay fever • Insect bites • What Are First-Generation Antihistamines? First-generation antihistamines became available for general use in 1942 and are still used today. These antihistamines work by affecting the histamine receptors in the brain and spinal cord. One of their defining characteristics, though, is that they go through the blood-brain barrier and can cause sleepiness. Some examples of first-generation antihistamines include: • These antihistamines start to take effect in about 30 to 60 minutes and last for four to six hours. The most popular first-generation antihistamine is chlorpheniramine, especially for...

Medical News Todayonly shows you brands and products that we stand behind. Our team thoroughly researches and evaluates the recommendations we make on our site. To establish that the product manufacturers addressed safety and efficacy standards, we: • Evaluate ingredients and composition:Do they have the potential to cause harm? • Fact-check all health claims:Do they align with the current body of scientific evidence? • Assess the brand:Does it operate with integrity and adhere to industry best practices? We do the research so you can find trusted products for your health and wellness. Antihistamines are a type of medication that treats allergy symptoms. They block histamine receptors on cells, reducing physical response to allergens. When a person has an allergic reaction, they may experience symptoms such as nasal congestion, This article will look at how antihistamines work, as well as the differences between first-, second-, and third-generation antihistamines and their side effects. Share on Pinterest A person may take antihistamines to treat allergic rhinitis. A person experiences an allergic reaction when they come into contact with a harmless substance that their body interprets as an invading pathogen. Allergens are substances that trigger allergic reactions, and they include anything from pet dander and pollen to specific proteins found in foods. When an allergen enters a person’s body or touches their skin, cells in the immune system release histamines, which bi...

Are you all stuffed up and It pays to do a little homework to make sure you're picking the right medicine for your symptoms. How Do Decongestants Work? They help reduce swelling in the passageways of your nose, which relieves the feeling of pressure and improves the flow of air. You'll be able to breathe a whole lot better. How Do Antihistamines Work? Some types of them can help relieve your They block a chemical your body makes called Most experts say that histamine isn't the major cause of a runny nose when you have a cold. Even so, some of the older antihistamines, such as Newer antihistamines like Are Decongestants and Antihistamines Safe? A decongestant called Today's medicines don’t have PPA, but make sure you don't have any old cold meds in your house that might contain the ingredient. What Are the Side Effects? The main one for antihistamines is drowsiness, so it can be tough to take during the day. That's why they're often included in nighttime cold medicines. Other common side effects include Decongestants may keep you awake and are usually taken during the day. Nasal sprays are less likely to have that side effect and may be helpful at night for congestion. Decongestants can also raise What Are Some Common Decongestants and Antihistamines for Colds? There are many over-the-counter decongestants and antihistamines that can help treat your symptoms. They're sold separately or as part of a combo with other cold and pain drugs. If you choose a combination medicine, ...

Antihistamines block histamine release from histamine-1 receptors and are mostly used to treat Histamine-1 receptors are located in your airways (breathing tubes), blood vessels, stomach, and esophagus (throat area). Allergens, such as pollen or pet fur can stimulate these receptors, causing the release of histamine, which results in symptoms such as a rash, sneezing, a What are antihistamines used for? Antihistamines can help relieve the symptoms of an allergic reaction, such as: • a rash • itchiness • redness (inflammation) • swelling ( • red and watery eyes • a runny nose • sneezing. This makes antihistamines very effective for the treatment of: • • colds • flu • food allergies • • • hypersensitivity reactions to drugs • • stings. Sedating antihistamines (see explanation below) also act in the brain and spinal cord, and on other receptors. This makes some of them also useful for: • inducing sleep • preventing or treating motion sickness • reducing • some symptoms of Parkinson’s disease in people unable to tolerate traditional medications for Parkinson's disease. What are the differences between antihistamines? Antihistamines can be classified into two main categories: • first-generation antihistamines (also known as sedating antihistamines because they all cause drowsiness) • second-generation antihistamines (also known as non-sedating antihistamines because they don't tend to cause drowsiness, although they may do so in some people). First-generation (sedating) antihis...